We know JAM is an entrance test conducted by IITs & IISC for admission into MSc, integrated Ph.D. programs, and Other MSc.
"With the announcement of the IIT JAM 2021 exam schedule, aspirants should begin preparing for the entrance exam as soon as possible. As aspirants study for JAM entrance exams in order to get admission to IITs, they will be faced with a common question:
All nationalities (Indian and foreign) are welcome to participate in JAM Exam 2022. Candidates seeking admission to academic programmes covered by JAM 2022 for the academic year 2022-23 must take JAM 2022. There is no upper age limit.